One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,9)(3,4,11,7)(5,8,14,16)(10,12,15,13)(17,18,23,26)(19,24,30,32)(20,25,28,29)(21,31,27,22)(33,34)(35,42)(36,39)(37,45)(38,41)(40,46)(43,44)(47,48)(1,3,6,11)(2,7,9,4)(5,10,14,15)(8,13,16,12)(17,19)(18,24)(20,21)(22,29)(23,30)(25,31)(26,32)(27,28)(17,20)(18,25)(19,27)(21,30)(22,24)(23,28)(26,29)(31,32)(33,35,38,39)(34,36,41,42)(37,43,46,47)(40,44,45,48)(1,4)(2,3)(5,13)(6,7)(8,15)(9,11)(10,16)(12,14)(17,20)(18,25)(19,21)(22,32)(23,28)(24,31)(26,29)(27,30)(33,34)(35,36)(37,40)(38,41)(39,42)(43,44)(45,46)(47,48) involution — undirected(1,3)(2,7)(4,9)(5,10)(6,11)(8,13)(12,16)(14,15)(17,21)(18,22)(19,28)(20,30)(23,27)(24,25)(26,31)(29,32)(33,36)(34,39)(35,41)(37,44)(38,42)(40,47)(43,45)(46,48) involution — undirected(1,5,6,14)(2,8,9,16)(3,10,11,15)(4,12,7,13)(17,22)(18,21)(19,29)(20,24)(23,31)(25,30)(26,27)(28,32)(33,37)(34,40)(35,43)(36,44)(38,46)(39,47)(41,45)(42,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.